276 41. K. ALTH^IFOLIUS. 



jagged, neai^ly white. Filaments white. Anthers greenish. 

 Styles pale green or slightly flesh-coloured, especially at the 

 base. Primordial fruit-stalk about as long as the sepals. 

 The panicle and sepals are only slightly armed ; the prickles 

 short ; the setae very short and nearly equal; the aciculi 

 very few. 



This seems to be the R. althceifolius (Host), and agrees 

 in nearly all respects with Trattinnick's description. The 

 quantity of hair beneath the leaves appears variable, and 

 perhaps what is called felt in my description might more 

 correctly be considered as a dense mass of interlacing hairs 

 all seated upon the veins, for apparently the intervening 

 spaces are naked. There is a good representation of the 

 leaves of this plant is Euhi Germanici (tab. 45. A. f. 2), but 

 the whitely -felted underside is rarely found : both the shoots 

 and the panicle are figured as far more prickly than is 

 usually the case with those parts of our plant. 



R. nemorosus (Hayne) is not the same as my R. althcei- 

 folius, but, judging from his plate {Arzneyg, iii. t. 10), is 

 nearly related to R. corylifolius y 'pur'pureus. It has slightly 

 stalked and incumbent bas^al leaflets, patent sepals, broad 

 and almost triangular-ovate blunt pinkish slightly clawed 

 petals, yellowish anthers, pinkish styles, black fruit, an ob- 

 long stalked torus, and few straight slender prickles upon 

 the peduncles and rachis. Sonder considers it as identical 

 with R. pallidus (Weihe), but their similarity in not appa- 

 rent to me. 



Sonder believes that the R. nemorosus (Arrh.) and R. 

 Wahlhergii (Arrh.) are forms of R. corylifolius (Sm.)j and 

 as far as my information extends, I hold similar views con- 

 cerning them. My R. nemorosus a glahratus is probably 

 identical with R. corylifolius a suhlustris; the authentic R. 

 Wahlhergii from Sweden is apparently the var. y j^urpureus; 

 to var. p conju7igens or to var. y purpureus my R. nemoro- 



